Overview
The TL431AIPK3 is a three-terminal adjustable shunt regulator produced by Texas Instruments. This device is part of the TL431 series, known for its high precision and adjustable output voltage. The TL431AIPK3 offers specified thermal stability over a wide temperature range, making it suitable for various applications including automotive, industrial, and commercial environments.
The device features an adjustable output voltage that can be set between 2.5V and 36V using two external resistors, providing flexibility in design. It is available in the SOT-89 (PK) package, which is RoHS compliant and Pb-free, ensuring environmental sustainability.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Reference Input Voltage (Vref) | 2.44 to 2.495 | V |
| Reference Voltage Tolerance at 25°C | 1% (A grade) | - |
| Adjustable Output Voltage | 2.5V to 36V | V |
| Sink Current Capability | 1mA to 100mA | A |
| Typical Output Impedance | 0.2Ω | Ω |
| Operating Temperature Range | -40°C to 85°C | °C |
| Package Type | SOT-89 (PK) | - |
| Pins | 3 | - |
| RoHS Compliance | Yes | - |
Key Features
- High precision reference voltage with tolerance options of 0.5%, 1%, and 2% at 25°C
- Adjustable output voltage from 2.5V to 36V using two external resistors
- Sink current capability from 1mA to 100mA
- Typical output impedance of 0.2Ω
- Low output noise and high stability over the entire temperature range
- Operation from -40°C to 125°C, with specific grades for different temperature ranges
- AEC-Q100 qualified for automotive applications
- Available in various packages including SOT-89, TO-92, and SOIC
Applications
- Power supplies: on-board regulation, adjustable power supplies, and switching power supplies
- Industrial applications: AC/DC converters, AC inverter & VF drives, servo drive control modules
- Automotive applications: due to its AEC-Q100 qualification and extended temperature range
- Notebook PC power adapter designs and rack server power systems
Q & A
- What is the adjustable output voltage range of the TL431AIPK3?
The adjustable output voltage range is from 2.5V to 36V
- What are the reference voltage tolerance options for the TL431 series?
The tolerance options are 0.5% (B grade), 1% (A grade), and 2% (Standard grade) at 25°C
- What is the sink current capability of the TL431AIPK3?
The sink current capability is from 1mA to 100mA
- What is the typical output impedance of the TL431AIPK3?
The typical output impedance is 0.2Ω
- What is the operating temperature range of the TL431AIPK3?
The operating temperature range is from -40°C to 85°C
- Is the TL431AIPK3 RoHS compliant?
Yes, the TL431AIPK3 is RoHS compliant and Pb-free
- What package types are available for the TL431 series?
The TL431 series is available in packages such as SOT-89, TO-92, and SOIC
- What are some common applications of the TL431AIPK3?
Common applications include power supplies, industrial AC/DC converters, automotive systems, and notebook PC power adapter designs
- Is the TL431AIPK3 suitable for automotive applications?
Yes, the TL431AIPK3 is AEC-Q100 qualified, making it suitable for automotive applications
- What is the typical temperature drift of the TL431 series?
The typical temperature drift is 6mV for C temp and 14mV for I and Q temps
